Dispensing pump



lAug. 21, 1928.

F. P. MCCAULEY DI SPENS ING PUMP 2 Sheets-Sheet 1 i fr INVENTOR A l TORNEY WITNESS:

Aug. 21, 1928. 1,681,866

A F. P. MccAuLEY nIsPENsING PUMP Filed oct-.14, 1927 2 sheets-sheet 2 INVENTOR ATTOR N EY WITNESS:

Patented Aug. 21, 1928.

UNITEDv STATES FRANCIS P. MCCAULEY, OF WESTBUBY, NEW YORK.

DISPEN SING PUMP.

Application filed October 14, 1927. Serial No. 226,118.

r1`his invention relates to dispensing pumps and is an improvement over my invention shown and described in my co-pending application filed June 25, 1926, Ser. No.

118,558. The primary object of the inven-l tion resides in a liquid pump for mixing the contents of a receptacle to which the pump is. applied, measuring the amount of liquid to be dispensed, and dispensing the liquid, all in a single operation of the pump.

Another object of the invention is to provide .a pump for .use in dispensing any liquid containing two or more substances which require thorough mixing before it is dispensed in order that the full quality and flavor may be assured, the same being .especially adapted for use in the dispensing of milk wherein a proportionate amount of fat and solid is required during each'dispensing operation. c

A further object is the provision of a dispensing pump which may be applied to a container as a single unit and removed therefrom when desired for cleaning purposes, whereby the parts may be kept in a sanitary condition at all times.

A stillffurther object is to provide a dispensing pump which is 'springless in construction and which is normally held in a position Vfor'insta-nt operation which automatically returns to such position after each dispensing operation. l

With these and further objects in view, the invention lresides in certainV novel construction and vcombination of parts, the essential features of which are hereinafter fully described, are particularly pointed out in the appended claims, and are illustrated ,in the'accompanying drawings in which Figure 1 is a perspective view of my improved pump per se.

v Figure 2 is a top plan View of the saine.

Figure 3 is a vertical sectional view on the line 3-3 of Figure 2.(V

Figure 4 is a similar view on the line 4-4 of Figure 2.

` Figure 5 is a horizontal sectional view on the line 5 5 of Figure 4. Y

Figure 6 is a similar view on the line of Figure 4.

f Referring to the drawings by reference characters, the numeral 1() designates my improved. pump in its entirety which constitutes a unit for use upon a receptacle or "the like 11. `The pump unit 1() includes a plate or disc 12 having a central opening 13 therein for slidably receiving a tubular plunger rod 14. lVhen in position upon the receptacle 11, the pla-te 12 serves as a covei` therefor as `clearly shown in Figure 3 of the drawings. Depending downward from thc plate 12 and disposed on opposite sides of the plunger rod 14 are guide rods 15 which have their lower ends bifurcated for fitting over the side walls of a cylinder 16. The cylinder 16 is riveted to the guide rods and has an internal diameter equal to the diameter of a plunger head 17 threaded to the lower end of the tubular plunger rod 14. The head 17 is slidably mounted on the guide rods by providing notches 18 in the peripheral edge of the same to receive the rods and by which accidental rotation of the plunger head is prevented during reciprocation thereof. 'Vhen the unit is in position upon a can the cylinder 16 is suspended ust above the can bottom while the bottom of the cylinder is provided with an opening 18 through which liquid passes to the cylinder when the level of the liquid in the can drops below the top of the cylinder. The opening 18 is normally closed by a captive gravity valve 19 which automatically opens during the upward movement of the plunger head within the cylinder but is forced closed by the pressure set up by the plunger head during its down stroke into the cylinder to cause the contents of the cylinder to pass up through tubular plunger rod 14 and out through the discharge spout 2O extending outwardly from adjacent the top of the plunger rod. The eXtreme top end of the plunger rod is closed by a manipulating head 21 which is manually pressed to depress the plunger rod during the actuation of the pump under certain conditions.

The outer side wall of the tubular plunger rod has a series of rack teeth 22 thereon for meshing engagement with a gear 23 fixed 'to a shaft 24 ournalled for rotation in beaiings 25 mounted on a plate 12.

v Rack bars 26 and 27 are slidably mounted in the plate 12 and extend on opposite sides of the plate, the lower ends of the rack bars being provided with spaced perforated mixing discs 28 and 29 respectively. The discs 28 are slidable on the tubular plunger rod 14 which acts as a guide therefor while the discs 29 are slidable on one of the guide rods 15. The discs 28 gradually diminish in di- Oli ameter from the uppermost one toward the lowerinost one `while the discs 29 are arranged in an opposite manner, that is, they increase in diameter from the top disc toward the lower disc. The rack bar '2T-and its discs'29 constitute a mixer A and are made of a much heavier material-thanfthe` rack bar 26 and its discs 28 which constitutes a mixer B so to over-balance 'the mixer A for normally holding the Atw'o mixers. at diferent 'horizontal 4planes. -The mixer A lis @normally disposed below the mixer 'B as shown in AFigrnire V3 ot the drawings. The two rack bars 26 and 27 engage oppositesides eta ,gear .30 fixed to the shaft 2e and ywhich :gc r'is slightly larger in diameter 'than .the gear 23 to 'impart movementto the mixers simultaneously in opposite-directions with respect toeach other and at a faster rate .of speed than :the plunger head, sofas to cause a mixing of the liquid prior to the .entrance ot the plunger head 17 into cylinder .16. Fromthe description thus arf,'it will be seen that to dispense any quantity .of ,the contents, of the receptacle, theoperator may Vpress downward upon the manipulating head2l of the plunger rod and `inse doing,'causes the rack 22 to rotate the Egear l23.l V.As .the Vgear V25 is fixed tothe sha'tt`24, thesame will rotate thus imparting rotation `to the gear 30 whichac mates-the racks .26 and 27 inopposite directions. This actionmoves.theniixersA and B in opposite:directions causing a downwardpushing action. andfan `upward suction yand .a tho-rough mixing of .the liquid substancesand .whichillsthe cylinder 16 -and as `the plunger :head 17 ymoves .downward into .the cylinder, the 4contents thereof vis forced upwardthrough Vthe tubular plunger rod .Maand out through .the spout 2O.v .By releasing thepressure on theplunger rod the weight ofthe-mixer .A and its raclrbar overba'lances themixer B and returns theplunger and mixers to their:originalgpositions.

The gears and racks are enclosed within 4a suitable'housingI 3l and Vfor dispensing a predetermined amount of' liquid during each actuation, l provide ra cranlrhandle v32 on one en d'oftheshaft 24.1'Suitable spaced stops are slidably mounted in the housing-3l `andrmay be selectively movedvout lfinto the path ot the crankhandle 32 to limit turning movement of the same.v For example, should 1t be desired to dispensea glass jot liquid, the irststopis vmoved ont into the path. of movement of the handleorengagement therebywhich limits movement of the plunger head'into the cylinder, thus caus- Iing the dispensing of'but a-small quantity l ot liquid. l `moved' to .an obstructive positionk depending Any one-ofthe stops-may be upon lthe amounttofv liquid to be dispensed,

:or they ymay `all :be-moved` out 'of the path ofthe handle to allow a full revolution of which `^tliccontents of a rreceptacle is thon oughly mixed twice on each actuation ot the -pump7 namely, before and after each dispensing operation.

"Tit hat is claimed as new is 1. ln a dispensing pump, aV cylinder, a reciprocable plunger Vmovable'into said Ycylinder andhaving a 'tubular plunger rod,'re ciprocable n'iixing elements, and means'ifor zuztuatined said mixing elements vin opposite directions with respectto each otherandtor simultaneously imparting reciprocationto said plunger. i

` 2. in a dispensing pump,' a cylindena reciprocable plunger movable into Lsaid cylinder and having a tubular plunger'rodcciprocable mixing elements, and. means for actuating said mixing elements inopposite directions with respect ltoV Aeach other and ier simultancou imparting reciprocation to said plunger Vtor movementin'the same direction with one ot' said Vmixing elements but at a slower speed with respect thereto.

ln a dispensing pump,a cylinder, a reciprocable plunger movable -into said cylinder audhaving a tubular Vplunger rod provided with a ,tlischargeoutlea reciprocable mixing elements, actuating means Vfor reciprocating said mixing elements simultaneously Vin opposite directions with respect toV each other, and means for simultaneously reciprocating said plunger with said'mix ing elementsbut at a :slower rate ofspeed .with respect thereto. A

:4.111 a dispensing pump', a cylindera reciprocable` plunger movable into said vcylinder andhaving a tubular Vplunger rodvprovided witha .discharge outlet,'reciprocable mixing elements, actuating means 'for reciprocating said mixing elements@simultaneous- .ly inV ropposite directions .with respectto eac-h other,.and mean'slifor simultaneously recipments butat ais'lowe'r rate o'fspeed with respect L thereto, and rlmealns for'l regulating the reciprocation of said plunger l and ymixing elements in their movement'in one direction.

`5.l In a dispensingfpump, a cylinder, a reciprocable plunger movable into; saidcylinder and having a tubular rplunger rod .provided with a discharge outlet, reciprocable mixing ,-elements, actuating means'tor reciprocating said mixing elements simultaneously inopposite directions with respect to each other, and means lfor simultaneously reciprocating saidplunger withsai'd mixing elementsbut ata slower ratevof speedwith respect thereto, and `means for regulating the reciprocation of saidplunger and mixing elements'in their movementin one direction, said last means including a rotatable manipulating handle, and slidable stops selectively movable into the path of movement of said handle.

6. Ina dispensing pump, a cylinder, a reciprocable plunger having a tubular plunger rod, provided With a discharge outlet, a series of rack teeth provided on said plunger rod, a rotatable shaft journalled adjacent said plunger rod, a manipulating handle fixed to said shaft, and a gear fixed to said shaft and meshing With the rack teeth on said plunger rod, a second gear fixed to said shaft, a pair of reciprocable mixing elements including rack bars meshing respectively With opposite sides of said second gear.

7. In a dispensing pump, a cylinder, a reciprocable plunger having a tubular plunger rod provided with a discharge outlet, a series of rack teeth provided on said plunger rod, a rotatable shaft journalled adjacent said f plunger rod, a manipulating handle fixed to said shaft and a gear fixed to said shaft and meshing with the rack teeth on said plunger rod, a second gear fixed to said shaft, a pair of reeiprocable mixing elements including rack bars meshing respectively With opposite sides of said second gear, the Weight of one of said mixing elements being greater than the Weight of the other mixing element to lover-balance the same to normally hold said mixing elements on different horizontal planes.

8. In a dispensing pump for use in connection with a container, a plate, a pair of spaced guide rails suspended from said plate, a cylinder carried by said side rails, a plunger head slidably mounted on said guide rails, a tubular plunger rod connected to said plunger head and slidably mounted in said plate, and provided with an outlet, a series of gear teeth provided on said tubular plunger rod, a shaft journalled above said plate, a handle on said shaft for imparting turning movement thereto, and a gear fixed to said shaft and meshing With the rack teeth on said tubular plunger rod.

9. In a dispensing pump for use in connection With a container, a plate, a pair of spaced guide rails suspended from said plate, a cylinder carried by said side rails, a plunger head slidably mounted on said guide rails, a tubular plunger rod connected to said plunger head and slidably mounted in said plate and provided with an outlet, a series of gear teeth provided on said tubular plunger rod, a sha-ft journalled above said plate, a handle on said shaft for imparting turning movement thereto, and a gear fixed to said shaft and meshing with the rack teeth on said tubular plunger rod, and selective obstructing elements movable into the path of said handle for limiting turning movement thereof.

10. In a liquid dispensing pump, a pair of reciprocable mixing elements, each of said mixing elements including a plurality of spaced discs of varying diameter, the disks of the respective mixing elements being out vof the path of movement of each other to allow the same to pass during reciprocation and means for imparting simultaneous movement to said mixing elements in opposite directions.

In testimony whereof I have afiixed my signature.

FRANCIS P. MGCAULEY. 

